Does my single family rental property qualify as QBI (Qualified Business Income)?

I have a house that I have been renting for a number of years.  I use a property manager to manage the rental.  TT is asking me whether my rental is a business or an investment.  If it is a business, then it qualifies as QBI.  The difference between business (QBI) and investment (not QBI) is vague to me.  Any advice would be much appreciated.